JP5122007B1 - Absorbent articles - Google Patents

Abstract

The present invention provides an absorbent article in which the top sheet does not feel sticky even after absorbing highly viscous menstrual blood and the top sheet is smooth.
An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body between the liquid-permeable top sheet and the liquid-impermeable back sheet. The liquid-permeable top sheet 2 has an IOB of 0.00 to 6.0, a melting point of 45 ° C. or lower, and a water solubility of 0.00 to 0.05 g with respect to 100 g of water at 25 ° C. An absorbent article 1 comprising a blood modifying agent having a weight average molecular weight of 1,000 or less.
[Selection] Figure 1

Description

  The present disclosure relates to absorbent articles.

  Absorbent articles such as sanitary napkins, panty liners, etc. have improved basic performance due to many years of technical development, and leaks etc. after absorbing excretion such as menstrual blood compared to before. Currently, there is a demand for further enhancement of functionality, for example, having a feeling of wearing close to underwear, and that the topsheet is smooth even after excretion of menstrual blood and the like is absorbed. It has been. In particular, menstrual menstrual blood may contain components such as endometrium, and the viscosity of the menstrual blood is high. Even after absorption of menstrual blood with high viscosity, there is no stickiness and the top sheet Is required to be smooth. In addition, highly viscous menstrual blood often remains in a lump state on the top sheet, and the user often feels visually uncomfortable. It is preferable not to leave it on the top sheet.

For example, Patent Document 1 discloses a cellulosic hydrophilic fiber containing one or more surfactants selected from the group consisting of sugar alkyl ethers and sugar fatty acid esters in a portion other than the skin contact surface. Absorbent articles containing are described.
Patent Document 2 discloses a lotion composition containing a polypropylene glycol material, an inner surface of the top sheet (clothing side surface), an inner surface of the back sheet (body side surface), an inner surface of the top sheet, and a back sheet. An absorbent article disposed on a base material or the like between the inner surfaces is disclosed.
Furthermore, Patent Document 3 discloses an absorbent article in which a lotion composition containing a polypropylene glycol material is applied to the outer surface (body side surface) of a top sheet.

JP 2008-029830 A JP 2010-518918 Special table 2011-510801

  However, in the invention described in Patent Document 1, an attempt is made to change the viscosity and surface tension of menstrual blood with high viscosity using a so-called surfactant to increase the absorption speed of the liquid. It is not sufficient, and after absorbing highly viscous menstrual blood, there is no stickiness and the top sheet is not yet smooth. Moreover, in the invention described in Patent Document 1, since it is necessary to apply the surfactant as an aqueous solution, there is a problem from the viewpoint of productivity when a subsequent drying step is included.

  Further, the inventors of the present invention have confirmed that the inventions described in Patent Documents 2 and 3 indicate that the polypropylene glycol material has different absorption capacity depending on the molecular weight, and the low molecular weight polypropylene glycol material has a stickiness on the top sheet after absorbing blood. It became clear that there was a tendency for the feeling to remain and the redness of the blood to remain. In addition, it has been clarified that a high-molecular weight polypropylene glycol material tends to cause stickiness due to the tackiness of the material itself.

Therefore, an object of the present disclosure is to provide an absorbent article in which the top sheet does not feel sticky even after absorbing highly viscous menstrual blood and the top sheet is smooth.
Another object of the present disclosure is to provide an absorbent article in which highly viscous menstrual blood does not remain on the top sheet and the wearer does not feel visually uncomfortable.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that a liquid-permeable top sheet, a liquid-impermeable back sheet, the liquid-permeable top sheet, and a liquid-impermeable back sheet The liquid-permeable top sheet has an IOB of 0.00 to 0.60, a melting point of 45 ° C. or lower, and 100 g of water at 25 ° C. It has been found that the above-mentioned problems can be solved by an absorbent article comprising a blood modifying agent having a water solubility of 0.000 to 0.05 g and a weight average molecular weight of less than 1,000.

Since the absorbent article of the present disclosure can quickly transfer menstrual blood from the top sheet to the absorbent body, highly viscous menstrual blood does not easily remain on the top sheet, the top sheet does not feel sticky, and has a smooth feeling. Can have.
In the absorbent article of the present disclosure, a highly viscous menstrual clot does not easily remain on the top sheet, and it is difficult for the wearer to feel visually uncomfortable.

FIG. 1 is a diagram showing a range in which the top sheet contains a blood modifying agent in Example 1. FIG. FIG. 2 is an electron micrograph of the skin contact surface of the top sheet in a sanitary napkin in which the top sheet contains tri-C2L oil fatty acid glycerides. FIG. 3 is a micrograph of menstrual blood with or without a blood modifying agent. FIG. 4 is a diagram for explaining a method of measuring surface tension.

The absorbent article of the present disclosure will be described in detail below.
[Blood modifier]
The blood modifying agent according to the present disclosure has an IOB of about 0.00 to about 0.60, a melting point of about 45 ° C. or less, a water solubility of about 0.00 to about 0.05 g at 25 ° C., and about Having a weight average molecular weight of less than 1,000.

IOB (Inorganic Organic Balance) is an index indicating a balance between hydrophilicity and lipophilicity. In the present specification, the following formula by Oda et al.
IOB = value calculated by inorganic value / organic value.

The inorganic value and the organic value are represented by Fujita Minoru, “Prediction of organic compounds and conceptual diagram of organic compounds” in the field of chemistry Vol. 11, no. 10 (1957) p. 719-725).
Table 1 below summarizes the organic and inorganic values of the major groups by Mr. Fujita.

For example, in the case of an ester of tetradecanoic acid having 14 carbon atoms and dodecyl alcohol having 12 carbon atoms, the organic value is 520 (CH ₂ , 20 × 26), and the inorganic value is 60 (—COOR, 60 × 1), so that IOB = 0.12.

  In the blood modifying agent, the IOB is about 0.00 to about 0.60, preferably about 0.00 to about 0.50, and preferably about 0.00 to about 0.40. More preferred is about 0.00 to about 0.30. This is because the lower the IOB, the higher the organicity and the higher the affinity with blood cells.

  In the present specification, the “melting point” means a peak top temperature of an endothermic peak when changing from a solid state to a liquid state when measured with a differential scanning calorimeter at a temperature rising rate of 10 ° C./min. The melting point can be measured, for example, using a DSC-60 type DSC measuring apparatus manufactured by Shimadzu Corporation.

  The blood modifying agent may be liquid at room temperature or solid as long as it has a melting point of about 45 ° C. or lower, that is, whether the melting point is about 25 ° C. or higher, or less than about 25 ° C. Well and can have a melting point of, for example, about -5 ° C, about -20 ° C, and the like. The reason why the melting point of the blood modifying agent is about 45 ° C. or less will be described later.

  The blood modifying agent has a lower melting point, but preferably has a low vapor pressure. The blood pressure of the blood modifying agent is preferably about 0.00 to about 0.01 Pa, more preferably about 0.000 to about 0.001 Pa at 1 atmosphere and 25 ° C., and about 0 More preferably, it is 0.000 to about 0.0001 Pa. Considering that the absorbent article of the present disclosure is used in contact with the human body, the vapor pressure is preferably about 0.00 to about 0.01 Pa at 1 atm and 40 ° C., and about 0.000 to More preferably, it is about 0.001 Pa, and more preferably about 0.0000 to about 0.0001 Pa. This is because if the vapor pressure is high, vaporization may occur during storage, and problems such as a decrease in the amount of blood modifying agent and odor when worn may occur.

Further, the melting point of the blood modifying agent can be properly used according to the climate, the length of wearing time, and the like. For example, in an area where the average temperature is about 10 ° C. or less, even when the menstrual blood is excreted and then cooled by the ambient temperature by adopting a blood modifying agent having a melting point of about 10 ° C. or less. It is considered that the blood modifying agent can stably modify blood.
When the absorbent article is used for a long time, the melting point of the blood modifying agent is preferably higher in the range of about 45 ° C. or less. This is because the blood modifying agent is difficult to move even when it is worn for a long time, and is hardly affected by sweat, friction at the time of wearing, and the like.

The water solubility of 0.00-0.05 g was obtained by adding 0.05 g of sample to 100 g of deionized water at 25 ° C., allowing to stand for 24 hours, and stirring gently as necessary. It can be measured by visually evaluating whether or not it is dissolved.
In the present specification, regarding dissolution in water, “dissolution” includes a case where the sample is completely dissolved in deionized water to form a uniform mixture and a case where the sample is completely emulsified. “Complete” means that there is no lump of sample in deionized water.

  In this technical field, the surface of a top sheet is coated with a surfactant for the purpose of changing the surface tension of blood and the like to absorb blood rapidly. However, since surfactants generally have high water solubility, top sheets coated with surfactants are well-suited to hydrophilic components (blood plasma, etc.) in blood, but rather leave blood on the top sheet. There is a tendency to work. Since the blood modifying agent has low water solubility, it is considered that blood can be quickly transferred to the absorbent body without remaining on the top sheet, unlike conventionally known surfactants.

In the present specification, the solubility in 100 g of water at 25 ° C. may be simply referred to as “water solubility”.
The blood modifying agent can have a water solubility of about 0.00 g. Therefore, in the blood modifying agent, the lower limit of the water solubility is about 0.00 g.

  The blood modifying agent has a weight average molecular weight of less than about 1,000, and preferably has a weight average molecular weight of less than about 900. This is because when the weight average molecular weight is about 1,000 or more, the blood modifying agent itself has tackiness and tends to give the wearer an unpleasant feeling. Moreover, since the viscosity of the blood modifying agent tends to increase as the weight average molecular weight increases, it becomes difficult to lower the viscosity of the blood modifying agent to a viscosity suitable for coating by heating. As a result, the blood modifying agent may need to be diluted with a solvent.

  The blood modifying agent preferably has a weight average molecular weight of about 100 or more, and more preferably has a weight average molecular weight of about 200 or more. This is because if the weight average molecular weight is small, the vapor pressure becomes high and vaporizes during storage, which may cause problems such as a decrease in the amount of blood modifying agent and odor when worn.

In the present specification, “weight average molecular weight” refers to a polydispersed compound (for example, a compound produced by sequential polymerization, a plurality of fatty acids, and an ester produced from a plurality of aliphatic monohydric alcohols). , A concept that includes a single compound (eg, an ester formed from one fatty acid and one aliphatic monohydric alcohol), and N _i molecules of molecular weight M _i (i = 1, or i = 1, 2, ...), the following formula:
M _w = ΣN _i M _i ² / ΣN _i M _i
Means M _w obtained by

In this specification, a weight average molecular weight means the value of polystyrene conversion calculated | required by gel permeation chromatography (GPC).
Examples of GPC measurement conditions include the following.
Model: Hitachi High-Technologies Corporation High-Performance Liquid Chromatogram Lachrom Elite
Column: SHODEX KF-801, KF-803 and KF-804 manufactured by Showa Denko K.K.
Eluent: THF
Flow rate: 1.0 mL / min Driving amount: 100 μL
Detection: RI (differential refractometer)
In addition, the weight average molecular weight described in the Example of this specification is measured on the said conditions.

The blood modifying agent is preferably the following (i) to (iii),
(I) hydrocarbons,
(Ii) from (ii-1) a hydrocarbon moiety and (ii-2) a carbonyl group (—CO—) and an oxy group (—O—) inserted between the C—C single bonds of the hydrocarbon moiety. A compound having one or a plurality of the same or different groups selected from the group consisting of: (iii) (iii-1) a hydrocarbon moiety, and (iii-2) a CC single bond of the hydrocarbon moiety One or a plurality of the same or different groups selected from the group consisting of a carbonyl group (—CO—) and an oxy group (—O—), and (iii-3) the hydrocarbon moiety A group comprising one or more compounds having the same or different groups selected from the group consisting of a carboxyl group (—COOH) and a hydroxyl group (—OH), and any combination thereof, which replaces a hydrogen atom Selected from.

  In the present specification, “hydrocarbon” means a compound composed of carbon and hydrogen, and a chain hydrocarbon, for example, a paraffinic hydrocarbon (also referred to as an alkane, which does not include a double bond and a triple bond). , Olefinic hydrocarbons (including one double bond, also referred to as alkene), acetylenic hydrocarbons (including one triple bond, also referred to as alkyne), and the group consisting of double and triple bonds And hydrocarbons containing two or more bonds selected from the above, and cyclic hydrocarbons such as aromatic hydrocarbons and alicyclic hydrocarbons.

The hydrocarbon is preferably a chain hydrocarbon and an alicyclic hydrocarbon, more preferably a chain hydrocarbon, a paraffinic hydrocarbon, an olefinic hydrocarbon, and two double bonds. More preferred are hydrocarbons (not including triple bonds), and more preferred are paraffinic hydrocarbons.
The chain hydrocarbon includes a straight chain hydrocarbon and a branched chain hydrocarbon.

  In the compounds (ii) and (iii), when two or more oxy groups (—O—) are inserted, the oxy groups (—O—) are not adjacent to each other. Therefore, the compounds (ii) and (iii) do not include compounds having a continuous oxy group (so-called peroxides).

  In the compound of (iii), at least one hydrogen atom of the hydrocarbon moiety is more preferably a hydroxyl group (—OH) than a compound in which at least one hydrogen atom of the hydrocarbon moiety is substituted with a carboxyl group (—COOH). ) Is preferred. As shown in Table 1, since the carboxyl group binds to menstrual metals and the like, and the inorganic value increases significantly from 150 to 400 or more, the blood modifying agent having a carboxyl group is used at the time of use. This is because the value of IOB exceeds about 0.60, and the affinity with blood cells may be reduced.

The blood modifying agent is more preferably the following (i ′) to (iii ′),
(I ′) hydrocarbon,
(Ii ′) (ii′-1) a hydrocarbon moiety and (ii′-2) a carbonyl bond (—CO—), an ester bond (—COO) inserted between the C—C single bonds of the hydrocarbon moiety. -), A carbonate bond (-OCOO-), and a compound selected from the group consisting of an ether bond (-O-) and having one or more same or different bonds, and (iii ') (iii'- 1) a hydrocarbon moiety and (iii′-2) a carbonyl bond (—CO—), an ester bond (—COO—), a carbonate bond (—OCOO) inserted between the C—C single bonds of the hydrocarbon moiety. -), And one or a plurality of the same or different bonds selected from the group consisting of an ether bond (-O-), and (iii'-3) a carboxyl group that replaces the hydrogen atom of the hydrocarbon moiety ( -COOH) and hydroxy A compound having one or a plurality of the same or different groups selected from the group consisting of a sil group (—OH);
As well as any combination thereof.

  In the compounds (ii ′) and (iii ′) above, when two or more identical or different bonds are inserted, that is, a carbonyl bond (—CO—), an ester bond (—COO—), a carbonate bond (— When two or more identical or different bonds selected from OCOO-) and ether bond (-O-) are inserted, each bond is not adjacent, and at least between each bond, One carbon atom is present.

  More preferably, the blood modifying agent is more preferably about 1.8 or less carbonyl bonds (—CO—) and 2 or less ester bonds (—COO—) per 10 carbon atoms in the hydrocarbon moiety. About 1.5 or less carbonate bonds (—OCOO—), about 6 or less ether bonds (—O—), about 0.8 or less carboxyl groups (—COOH), and / or hydroxyl groups (—OH) ) In a compound having about 1.2 or less.

The blood modifying agent is more preferably the following (A) to (F),
(A) (A1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (A2) a chain hydrocarbon moiety, and the chain An ester with a compound having one carboxyl group for substituting a hydrogen atom in the hydrocarbon moiety,
(B) (B1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (B2) a chain hydrocarbon moiety, and the chain An ether with a compound having one hydroxyl group replacing a hydrogen atom of the hydrocarbon moiety,
(C) (C1) a carboxylic acid, a hydroxy acid, an alkoxy acid or an oxo acid containing a chain hydrocarbon moiety and 2 to 4 carboxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety; C2) an ester of a compound having a chain hydrocarbon moiety and a hydroxyl group that replaces a hydrogen atom of the chain hydrocarbon moiety,
(D) an ether bond (—O—), a carbonyl bond (—CO—), an ester bond (—COO—) inserted between the chain hydrocarbon moiety and the CC single bond of the chain hydrocarbon moiety. ), And any one selected from the group consisting of carbonate bonds (—OCOO—),
(E) polyoxy C ₃ -C ₆ alkylene glycol or its alkyl ester or alkyl ether, and (F) a chain hydrocarbon,
As well as any combination thereof.
Hereinafter, the blood modifying agent according to (A) to (F) will be described in detail.

[(A) (A1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (A2) a chain hydrocarbon moiety, and Esters with compounds having one carboxyl group replacing a hydrogen atom of a chain hydrocarbon moiety]
(A) (A1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (A2) a chain hydrocarbon moiety, and the chain As long as the ester with a compound having one carboxyl group that replaces the hydrogen atom of the hydrocarbon moiety (hereinafter sometimes referred to as “compound (A)”) has the above-mentioned IOB, melting point and water solubility, , Not all hydroxyl groups may be esterified.

(A1) As a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety (hereinafter sometimes referred to as “compound (A1)”) A chain hydrocarbon tetraol, such as an alkanetetraol, such as pentaerythritol, a chain hydrocarbon triol, such as an alkanetriol, such as glycerine, and a chain hydrocarbon diol, such as an alkanediol, such as, for example, Glycol.
Examples of the compound (A2) having a chain hydrocarbon moiety and one carboxyl group that replaces the hydrogen atom of the chain hydrocarbon moiety (hereinafter sometimes referred to as “compound (A2)”) include: , A compound in which one hydrogen atom on a hydrocarbon is substituted with one carboxyl group (—COOH), for example, a fatty acid.
Examples of the compound (A) include (a ₁ ) an ester of a chain hydrocarbon tetraol and at least one fatty acid, (a ₂ ) an ester of a chain hydrocarbon triol and at least one fatty acid, and (a ₃ ) Esters of chain hydrocarbon diols with at least one fatty acid.

[Ester of (a ₁ ) chain hydrocarbon tetraol and at least one fatty acid]
Examples of the ester of the chain hydrocarbon tetraol and at least one fatty acid include the following formula (1):
Tetraesters of pentaerythritol and fatty acids of the following formula (2):
Triesters of pentaerythritol and fatty acids of the following formula (3):
Diester of pentaerythritol and fatty acid of the following formula (4):
And monoesters of pentaerythritol and fatty acids.
(In the formula, R ^{1 to} R ⁴ are each a chain hydrocarbon)

As the fatty acid (R ¹ COOH, R ² COOH, R ³ COOH, and R ⁴ COOH) constituting the ester of pentaerythritol and fatty acid, the ester of pentaerythritol and fatty acid has the above-mentioned IOB, melting point and water solubility. as long as it satisfies the requirement, is not particularly limited, for example, saturated fatty acids, for example, saturated fatty acids C ₂ -C _30, for example, acetic acid (C ₂₎ (C ₂ indicates the number of carbon atoms, R ¹ C, R ² C, R ³ C or R ⁴ C, the same applies hereinafter), propanoic acid (C ₃ ), butanoic acid (C ₄ ) and isomers thereof such as 2-methylpropanoic acid (C ₄ ), Pentanoic acid (C ₅ ) and isomers thereof, such as 2-methylbutanoic acid (C ₅ ), 2,2-dimethylpropanoic acid (C ₅ ), hexanoic acid (C ₆ ), heptanoic acid (C ₇ ), octanoic acid (C ₈₎ Beauty isomers thereof, e.g., 2-ethylhexanoic acid (C _8), nonanoic acid (C _9), decanoic acid (C _10), dodecanoic acid (C _12), tetradecanoic acid (C _14), hexadecanoic acid (C ₁₆₎ Heptadecanoic acid (C ₁₇ ), octadecanoic acid (C ₁₈ ), eicosanoic acid (C ₂₀ ), docosanoic acid (C ₂₂ ), tetracosanoic acid (C ₂₄ ), hexacosanoic acid (C ₂₆ ), octacosanoic acid (C ₂₈ ), Examples thereof include triacontanoic acid (C ₃₀ ) and the like, and isomers thereof (excluding those mentioned above).

The fatty acid can also be an unsaturated fatty acid. Examples of the unsaturated fatty acid include C _{3 to} C ₂₀ unsaturated fatty acids such as monounsaturated fatty acids such as crotonic acid (C ₄ ), myristoleic acid (C ₁₄ ), palmitoleic acid (C ₁₆ ), Oleic acid (C ₁₈ ), elaidic acid (C ₁₈ ), vaccenic acid (C ₁₈ ), gadoleic acid (C ₂₀ ), eicosenoic acid (C ₂₀ ), etc., diunsaturated fatty acids such as linoleic acid (C ₁₈ ), Triunsaturated fatty acids such as eicosadienoic acid (C ₂₀ ), such as linolenic acid, such as α-linolenic acid (C ₁₈ ) and γ-linolenic acid (C ₁₈ ), pinolenic acid (C ₁₈ ), eleostearic acid, For example, α-eleostearic acid (C ₁₈ ) and β-eleostearic acid (C ₁₈ ), mead acid (C ₂₀ ), dihomo-γ-linolenic acid (C ₂₀ ), eicosatrienoic acid (C ₂₀ ) Tetraunsaturated fatty acids such as Aridon acid (C _20), arachidonic acid (C _20), eicosatetraenoic acid (C _20), etc., penta unsaturated fatty acids, for example, bosseopentaenoic acid (C _18), such as eicosapentaenoic acid (C _20), as well as their Of the partial hydrogen adduct.

The ester of pentaerythritol and fatty acid is an ester of pentaerythritol and a fatty acid derived from a saturated fatty acid, that is, an ester of pentaerythritol and a saturated fatty acid, considering the possibility of modification by oxidation or the like. preferable.
The ester of pentaerythritol and fatty acid is preferably a diester, triester or tetraester, more preferably a triester or tetraester, in order to reduce IOB and make it more hydrophobic. And tetraesters are more preferred.

In the tetraester of pentaerythritol and fatty acid, the total number of carbon atoms of the fatty acid constituting the tetraester of pentaerythritol and fatty acid, that is, in the above formula (1), R ¹ C, R ² C, R ³ C and When the total number of carbon atoms in the R ⁴ C portion is 15, IOB is 0.60. Therefore, in the tetraester of pentaerythritol and fatty acid, the IOB satisfies the requirement of about 0.00 to about 0.60 when the total number of carbon atoms is about 15 or more.
In the tetraester of pentaerythritol and fatty acid, for example, pentaerythritol, hexanoic acid (C ₆ ), heptanoic acid (C ₇ ), octanoic acid (C ₈ ), for example, 2-ethylhexanoic acid (C ₈ ), And tetraesters with nonanoic acid (C ₉ ), decanoic acid (C ₁₀ ) and / or dodecanoic acid (C ₁₂ ).

In the triester of pentaerythritol and fatty acid, the total number of carbon atoms of the fatty acid constituting the triester of pentaerythritol and fatty acid, that is, in the above formula (2), R ¹ C, R ² C and R ³ C moieties When the total number of carbon atoms is 19, IOB is 0.58. Therefore, in the triester of pentaerythritol and fatty acid, the IOB satisfies the requirement of about 0.00 to about 0.60 when the total number of carbon atoms of the fatty acid is about 19 or more.

In the diester of pentaerythritol and fatty acid, the total number of carbon atoms of the fatty acid constituting the diester of pentaerythritol and fatty acid, that is, the total number of carbon atoms of the R ¹ C and R ² C moieties in the above formula (3) is In the case of 22, the IOB is 0.59. Accordingly, in the diester of pentaerythritol and fatty acid, the IOB satisfies the requirement of about 0.00 to about 0.60 when the total number of carbon atoms of the fatty acid is about 22 or more.

In the monoester of pentaerythritol and fatty acid, the number of carbons of the fatty acid constituting the monoester of pentaerythritol and fatty acid, that is, in the above formula (4), the IOB is 25 when the carbon number of the R ¹ C portion is 25. 0.60. Therefore, in the monoester of pentaerythritol and fatty acid, when the fatty acid has about 25 or more carbon atoms, IOB satisfies the requirement of about 0.00 to about 0.60.
In the above calculation, the influence of double bond, triple bond, iso branch, and tert branch is not taken into consideration.

  As a commercial item of the ester of the said pentaerythritol and a fatty acid, Unistar H-408BRS, H-2408BRS-22 (mixture), etc. (above, NOF Corporation make) are mentioned.

[Ester of (a ₂ ) chain hydrocarbon triol and at least one fatty acid]
Examples of the ester of the chain hydrocarbon triol and at least one fatty acid include the following formula (5):

Triester of glycerin and fatty acid of the following formula (6):

Diesters of glycerin and fatty acids and the following formula (7):

(Wherein R ^{5 to} R ⁷ are each a chain hydrocarbon)
And monoesters of glycerin and fatty acids.

As the fatty acid (R ⁵ COOH, R ⁶ COOH and R ⁷ COOH) constituting the ester of the glycerin and the fatty acid, as long as the ester of the glycerin and the fatty acid satisfies the requirements for the IOB, melting point and water solubility, In particular, the fatty acids listed in “Ester of (a ₁ ) chain hydrocarbon tetraol and at least one fatty acid”, that is, saturated fatty acids and unsaturated fatty acids, and the like are modified by oxidation or the like. In consideration of the possibility, it is preferable to use an ester of glycerin and a fatty acid derived from a saturated fatty acid, that is, an ester of glycerin and a saturated fatty acid.
The ester of glycerin and fatty acid is preferably a diester or triester and more preferably a triester in order to reduce IOB and make it more hydrophobic.

The triester of glycerin and a fatty acid is also referred to as a triglyceride. For example, triester of glycerin and octanoic acid (C ₈ ), triester of glycerin and decanoic acid (C ₁₀ ), glycerin and dodecanoic acid (C ₁₂ ) And triesters of glycerin and 2 or 3 fatty acids, and mixtures thereof.

Examples of the triesters of glycerin and two or more fatty acids include triesters of glycerin and octanoic acid (C ₈ ) and decanoic acid (C ₁₀ ), glycerin, octanoic acid (C ₈ ), and decane. Acid (C ₁₀ ) and triester with dodecanoic acid (C ₁₂ ), glycerin and octanoic acid (C ₈ ), decanoic acid (C ₁₀ ), dodecanoic acid (C ₁₂ ), tetradecanoic acid (C ₁₄ ), hexadecanoic acid Examples thereof include triesters with (C ₁₆ ) and octadecanoic acid (C ₁₈ ).

As the triester of glycerin and fatty acid, the total number of carbon atoms of the fatty acid constituting the triester of glycerin and fatty acid, that is, R ⁵ C in formula (5) in order to make the melting point about 45 ° C. or less. , R ⁶ C and R ⁷ C moieties preferably have a total carbon number of about 40 or less.

In the triester of glycerin and fatty acid, the total number of carbon atoms of the fatty acid constituting the triester of glycerin and fatty acid, that is, in the formula (5), R ⁵ C, R ⁶ C and R ⁷ C moieties. When the total number of carbon atoms is 12, the IOB is 0.60. Therefore, in the triester of the glycerin and the fatty acid, the IOB satisfies the requirement of about 0.00 to about 0.60 when the total number of carbon atoms of the fatty acid is about 12 or more.
The triester of glycerin and a fatty acid is a so-called fat and is a component that can constitute a human body, and is preferable from the viewpoint of safety.

  Commercial products of the above-mentioned triester of glycerin and fatty acid include tricoconut oil fatty acid glyceride, NA36, panacet 800, panacet 800B and panacet 810S, and tri-C2L oil fatty acid glyceride and tri-CL oil fatty acid glyceride (above, manufactured by NOF Corporation). ) And the like.

The diester of glycerin and fatty acid is also called diglyceride. For example, diester of glycerin and decanoic acid (C ₁₀ ), diester of glycerin and dodecanoic acid (C ₁₂ ), glycerin and hexadecanoic acid (C ₁₆ ) Examples include diesters, diesters of glycerin and two fatty acids, and mixtures thereof.
In the diester of glycerin and fatty acid, the total number of carbon atoms of the fatty acid constituting the diester of glycerin and fatty acid, that is, the total number of carbon atoms of the R ⁵ C and R ⁶ C moieties in the formula (6) is 16. The IOB is 0.58. Therefore, in the diester of glycerin and fatty acid, the IOB satisfies the requirement of about 0.00 to about 0.60 when the total number of carbon atoms of the fatty acid is about 16 or more.

Monoesters of glycerin and fatty acids are also known as monoglycerides, for example, octadecanoic acid glycerin (C ₁₈₎ monoesters, docosanoate glycerin (C ₂₂₎ monoesters, and the like.
In the monoester of glycerin and fatty acid, the number of carbon atoms of the fatty acid constituting the monoester of glycerin and fatty acid, that is, when the carbon number of the R ⁵ C moiety in the formula (7) is 19, the IOB is 0.59. It becomes. Therefore, in the monoester of the glycerin and the fatty acid, when the carbon number of the fatty acid is about 19 or more, the IOB satisfies the requirement of about 0.00 to about 0.60.

[Ester of (a ₃ ) chain hydrocarbon diol and at least one fatty acid]
Examples of the ester of the chain hydrocarbon diol and at least one fatty acid include C _{2 to} C ₆ chain hydrocarbon diols such as C _{2 to} C ₆ glycols such as ethylene glycol, propylene glycol, and butylene. Examples thereof include monoesters or diesters of glycol, pentylene glycol or hexylene glycol and a fatty acid.

Specifically, as the ester of the chain hydrocarbon diol and at least one fatty acid, for example, the following formula (8):
R ⁸ COOC _k H _2k OCOR ⁹ (8)
(Wherein k is an integer from 2 to 6 and R ⁸ and R ⁹ are each a chain hydrocarbon)
A diester of a C ₂ -C ₆ glycol and a fatty acid, and the following formula (9):
R ⁸ COOC _k H _2k OH (9)
(Wherein k is an integer from 2 to 6 and R ⁸ is a chain hydrocarbon)
And monoesters of C ₂ -C ₆ glycols and fatty acids.

In the ester of C ₂ -C ₆ glycol and fatty acid, the fatty acid to be esterified (corresponding to R ⁸ COOH and R ⁹ COOH in formula (8) and formula (9)) is C ₂ -C ₆ glycol. And an ester of a fatty acid satisfying the above requirements of IOB, melting point and water solubility, for example, “(a ₁ ) ester of chain hydrocarbon tetraol and at least one fatty acid” The fatty acids listed in the above, that is, saturated fatty acids and unsaturated fatty acids are mentioned, and saturated fatty acids are preferred in consideration of the possibility of modification by oxidation or the like.

In the diester of butylene glycol (k = 4) and a fatty acid represented by the formula (8), when the total number of carbon atoms in the R ⁸ C and R ⁹ C moieties is 6, IOB is 0.60. Therefore, in the diester of butylene glycol (k = 4) and the fatty acid represented by the formula (8), when the total number of carbon atoms is about 6 or more, the IOB has a requirement of about 0.00 to about 0.60. Fulfill. Moreover, in the monoester of ethylene glycol (k = 2) and a fatty acid represented by the formula (9), when the carbon number of the R ⁸ C portion is 12, the IOB is 0.57. Accordingly, in the monoester of ethylene glycol (k = 2) and a fatty acid represented by the formula (9), when the fatty acid has about 12 or more carbon atoms, the IOB is about 0.00 to about 0.60. Meet.

The ester of a C ₂ -C ₆ glycol and fatty acids, in consideration of the potential for degradation by oxidation and the like, derived from saturated fatty acids, esters of C ₂ -C ₆ glycol and fatty acid, Nachi Suwa, C ₂ it is preferable -C ₆ glycol and an ester of saturated fatty acids.

As the ester of a C ₂ -C ₆ glycol and fatty acid, to reduce the IOB, in order to more hydrophobic, from large glycol carbon number, esters of glycols with fatty acids, for example, butylene glycol An ester of glycol and fatty acid derived from pentylene glycol or hexylene glycol is preferable.
Furthermore, the ester of the C ₂ -C ₆ glycol and the fatty acid is preferably a diester in order to reduce IOB and make it more hydrophobic.
Examples of commercial products of esters of the C ₂ -C ₆ glycols with fatty acids, for example, COMPOL BL, COMPOL BS (products of NOF Corporation) and the like.

[(B) (B1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (B2) a chain hydrocarbon moiety, and the above Ether with a compound having one hydroxyl group replacing a hydrogen atom of a chain hydrocarbon moiety]
(B) (B1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (B2) a chain hydrocarbon moiety, and the chain As long as it has the above-mentioned IOB, melting point and water solubility, an ether with a compound having one hydroxyl group that substitutes a hydrogen atom of the hydrocarbon moiety (hereinafter sometimes referred to as “compound (B)”) , All the hydroxyl groups may not be etherified.

(B1) As a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety (hereinafter sometimes referred to as “compound (B1)”) And those listed as the compound (A1) in “Compound (A)”, for example, pentaerythritol, glycerin, and glycol.
Examples of the compound (B2) having a chain hydrocarbon moiety and one hydroxyl group replacing the hydrogen atom of the chain hydrocarbon moiety (hereinafter sometimes referred to as “compound (B2)”) include: , Compounds in which one hydrogen atom of a hydrocarbon is replaced by one hydroxyl group (—OH), such as aliphatic monohydric alcohols, for example, saturated aliphatic monohydric alcohols and unsaturated aliphatic monohydric alcohols Is mentioned.

Examples of the saturated aliphatic monohydric alcohol include C _{1 to} C ₂₀ saturated aliphatic monohydric alcohols such as methyl alcohol (C ₁ ) (C ₁ represents the number of carbon atoms, the same shall apply hereinafter), ethyl alcohol ( C _2), propyl alcohol (C ₃₎ and isomers thereof, e.g., isopropyl alcohol (C _3), butyl alcohol (C ₄₎ and isomers thereof, for example, sec- butyl alcohol (C ₄₎ and tert- butyl alcohol (C ₄ ), pentyl alcohol (C ₅ ), hexyl alcohol (C ₆ ), heptyl alcohol (C ₇ ), octyl alcohol (C ₈ ) and isomers thereof such as 2-ethylhexyl alcohol (C ₈ ), nonyl alcohol (C _9), decyl alcohol (C _10), dodecyl alcohol (C _12), tetradecyl alcohol (C _14), Hexadecyl alcohol (C _16), to heptadecyl alcohol (C _17), octadecyl alcohol (C _18), and eicosyl alcohol (C _20), and isomers thereof that are not listed in these.
Examples of the unsaturated aliphatic monohydric alcohol include those obtained by substituting one of the C—C single bonds of the saturated aliphatic monohydric alcohol with a C═C double bond, such as oleyl alcohol. It is commercially available from Shin Nippon Rika Co., Ltd. under the names of the Rica Coal series and the Angelo All series.

Examples of the compound (B) include (b ₁ ) ethers of chain hydrocarbon tetraol and at least one aliphatic monohydric alcohol, such as monoether, diether, triether and tetraether, preferably diether, triether. Ethers and tetraethers, more preferably triethers and tetraethers, and even more preferably tetraethers, ethers of (b ₂ ) chain hydrocarbon triols and at least one aliphatic monohydric alcohol, such as monoethers, diethers and Triethers, preferably diethers and triethers, and more preferably triethers, and (b ₃ ) ethers of chain hydrocarbon diols with at least one aliphatic monohydric alcohol, such as monoethers and diethers, and preferably Diether It is below.

Examples of ethers of the chain hydrocarbon tetraol and at least one aliphatic monohydric alcohol include the following formulas (10) to (13):

(In the formula, R ^{10 to} R ¹³ are each a chain hydrocarbon.)
And tetraethers, triethers, diethers and monoethers of pentaerythritol and aliphatic monohydric alcohols.

Examples of ethers of the chain hydrocarbon triol and at least one aliphatic monohydric alcohol include, for example, the following formulas (14) to (16):

(In the formula, R ^{14 to} R ¹⁶ are each a chain hydrocarbon.)
And triether, diether and monoether of glycerin and aliphatic monohydric alcohol.

Examples of the ether of the chain hydrocarbon diol and at least one aliphatic monohydric alcohol include the following formula (17):
R ¹⁷ OC _n H _2n OR ¹⁸ (17)
(Wherein n is an integer from 2 to 6 and R ¹⁷ and R ¹⁸ are each a chain hydrocarbon)
A diether of a C ₂ -C ₆ glycol and an aliphatic monohydric alcohol, and the following formula (18):
R ¹⁷ OC _n H _2n OH (18)
(Wherein n is an integer from 2 to 6 and R ¹⁷ is a chain hydrocarbon)
And a monoether of a C ₂ -C ₆ glycol and an aliphatic monohydric alcohol.

In the tetraether of pentaerythritol and aliphatic monohydric alcohol, the total number of carbon atoms of the aliphatic monohydric alcohol constituting the tetraether of pentaerythritol and aliphatic monohydric alcohol, that is, in the above formula (10), When the total number of carbon atoms in the R ¹⁰ , R ¹¹ , R ¹² and R ¹³ parts is 4, the IOB is 0.44. Therefore, in the tetraether of pentaerythritol and aliphatic monohydric alcohol, when the total number of carbon atoms of the aliphatic monohydric alcohol is about 4 or more, the IOB is about 0.00 to about 0.60. Fulfill.

In the triether of pentaerythritol and aliphatic monohydric alcohol, the total number of carbon atoms of the aliphatic monohydric alcohol constituting the triether of pentaerythritol and aliphatic monohydric alcohol, that is, in the above formula (11), When the total number of carbon atoms in R ¹⁰ , R ¹¹ and R ¹² is 9, IOB is 0.57. Therefore, in the above-mentioned triether of pentaerythritol and aliphatic monohydric alcohol, when the total number of carbon atoms of the aliphatic monohydric alcohol is about 9 or more, the IOB has a requirement of about 0.00 to about 0.60. Fulfill.

In the diether of pentaerythritol and aliphatic monohydric alcohol, the total number of carbon atoms of the aliphatic monohydric alcohol constituting the diether of pentaerythritol and aliphatic monohydric alcohol, that is, in the formula (12), R ¹⁰ When the total number of carbon atoms in the R ¹¹ portion is 15, the IOB is 0.60. Therefore, in the diether of pentaerythritol and aliphatic monohydric alcohol, when the total number of carbon atoms of the aliphatic monohydric alcohol is about 15 or more, the IOB satisfies the requirement of about 0.00 to about 0.60. .

In the monoether of pentaerythritol and aliphatic monohydric alcohol, the carbon number of the aliphatic monohydric alcohol constituting the monoether of pentaerythritol and aliphatic monohydric alcohol, that is, in the above formula (13), R ¹⁰ When the number of carbon atoms in the portion is 22, the IOB is 0.59. Therefore, the monoether of pentaerythritol and aliphatic monohydric alcohol satisfies the requirement that IOB is about 0.00 to about 0.60 when the aliphatic monohydric alcohol has about 22 or more carbon atoms.

In the triether of glycerin and aliphatic monohydric alcohol, the total number of carbon atoms of the aliphatic monohydric alcohol constituting the triether of glycerin and aliphatic monohydric alcohol, that is, in the formula (14), R ^When the total number of carbon atoms in the ¹⁴ , R ¹⁵ and R ¹⁶ parts is 3, the IOB is 0.50. Therefore, in the above triether of glycerin and aliphatic monohydric alcohol, when the total number of carbon atoms of the aliphatic monohydric alcohol is about 3 or more, IOB satisfies the requirement of about 0.00 to about 0.60. .

In the diether of glycerin and aliphatic monohydric alcohol, the total number of carbon atoms of the aliphatic monohydric alcohol constituting the diether of glycerin and aliphatic monohydric alcohol, that is, in the formula (15), R ¹⁴ and R ¹⁵ When the total number of carbon atoms in the portion is 9, the IOB is 0.58. Therefore, in the diether of the glycerin and the aliphatic monohydric alcohol, when the total number of carbon atoms of the aliphatic monohydric alcohol is about 9 or more, the IOB satisfies the requirement of about 0.00 to about 0.60.

In the monoether of glycerin and aliphatic monohydric alcohol, the carbon number of the aliphatic monohydric alcohol constituting the monoether of glycerin and aliphatic monohydric alcohol, that is, the carbon of R ¹⁴ moiety in the formula (16). When the number is 16, the IOB is 0.58. Therefore, in the monoether of the glycerin and the aliphatic monohydric alcohol, the IOB satisfies the requirement of about 0.00 to about 0.60 when the aliphatic monohydric alcohol has about 16 or more carbon atoms.

In the diether of butylene glycol (n = 4) and aliphatic monohydric alcohol represented by the formula (17), when the total number of carbon atoms in the R ¹⁷ and R ¹⁸ parts is 2, the IOB is 0.33. . Therefore, in the diether of butylene glycol (n = 4) and the aliphatic monohydric alcohol represented by the formula (17), when the total number of carbon atoms of the aliphatic monohydric alcohol is 2 or more, the IOB is about 0.00 Meet the requirement of ~ 0.60. Further, in the monoether of ethylene glycol (n = 2) and aliphatic monohydric alcohol represented by the formula (18), when the number of carbon atoms in the R ¹⁷ portion is 8, the IOB is 0.60. Therefore, in the monoether of ethylene glycol (n = 2) and the aliphatic monohydric alcohol represented by the formula (18), when the aliphatic monohydric alcohol has about 8 or more carbon atoms, the IOB is about 0. Satisfies the requirement of 00 to about 0.60.

  The compound (B) can be produced by dehydrating and condensing the compound (B1) and the compound (B2) in the presence of an acid catalyst.

[(C) (C1) a carboxylic acid, a hydroxy acid, an alkoxy acid or an oxo acid containing a chain hydrocarbon moiety and 2 to 4 carboxyl groups that replace the hydrogen atoms of the chain hydrocarbon moiety; (C2) Ester of a compound having a chain hydrocarbon moiety and one hydroxyl group substituting a hydrogen atom of the chain hydrocarbon moiety]
(C) (C1) a carboxylic acid, a hydroxy acid, an alkoxy acid or an oxo acid containing a chain hydrocarbon moiety and 2 to 4 carboxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety; C2) An ester (hereinafter sometimes referred to as “compound (C)”) of a compound having a chain hydrocarbon moiety and one hydroxyl group that substitutes a hydrogen atom of the chain hydrocarbon moiety, As long as it has the above-mentioned IOB, melting point and water solubility, all carboxyl groups may not be esterified.

  (C1) Carboxylic acids, hydroxy acids, alkoxy acids or oxo acids (hereinafter referred to as “compounds”) containing a chain hydrocarbon moiety and 2 to 4 carboxyl groups that replace the hydrogen atoms of the chain hydrocarbon moiety. C1) "may be referred to as, for example, a chain hydrocarbon carboxylic acid having 2 to 4 carboxyl groups, such as a chain hydrocarbon dicarboxylic acid, such as an alkanedicarboxylic acid, such as ethanedioic acid. , Propanedioic acid, butanedioic acid, pentanedioic acid, hexanedioic acid, heptanedioic acid, octanedioic acid, nonanedioic acid and decanedioic acid, chain hydrocarbon tricarboxylic acids such as alkanetricarboxylic acid such as propane Acid, butanetriacid, pentanetriacid, hexanetriacid, heptanetriacid, octanetriacid, nonanetriacid and decanetriacid, and chain hydrocarbon tetracar Examples include boronic acids such as alkanetetracarboxylic acids such as butanetetraacid, pentanetetraacid, hexanetetraacid, heptanetetraacid, octanetetraacid, nonanetetraacid and decanetetraacid.

In addition, the compound (C1) includes a chain hydrocarbon hydroxy acid having 2 to 4 carboxyl groups, for example, a chain chain having 2 to 4 carboxyl groups such as malic acid, tartaric acid, citric acid, and isocitric acid. Hydrocarbon alkoxy acids such as O-acetylcitric acid and chain hydrocarbon oxoacids having 2 to 4 carboxyl groups are included.
(C2) Examples of the compound having a chain hydrocarbon moiety and one hydroxyl group substituting a hydrogen atom of the chain hydrocarbon moiety include those listed under “Compound (B)”, for example, aliphatic A monohydric alcohol is mentioned.

As the compound (C), (c ₁ ) an ester of a linear hydrocarbon tetracarboxylic acid having 4 carboxyl groups, a hydroxy acid, an alkoxy acid or an oxo acid and at least one aliphatic monohydric alcohol, for example, Monoesters, diesters, triesters and tetraesters, preferably diesters, triesters and tetraesters, more preferably triesters and tetraesters, and even more preferably tetraesters, (c ₂ ) a chain having three carboxyl groups Esters of hydrocarbon tricarboxylic acids, hydroxy acids, alkoxy acids or oxo acids with at least one aliphatic monohydric alcohol, such as monoesters, diesters and triesters, preferably diesters and triesters, and more preferably triesters And ( ₃₎ chain hydrocarbon dicarboxylic acids having two carboxyl groups, hydroxy acids, esters of alkoxy acids or oxoacids, and at least one aliphatic monohydric alcohol, for example, mono- and diesters, preferably include diester It is done.
Examples of compound (C) include dioctyl adipate, tributyl O-acetylcitrate and the like, and are commercially available.

[(D) an ether bond (—O—), a carbonyl bond (—CO—), an ester bond (—COO) inserted between a chain hydrocarbon moiety and a CC single bond of the chain hydrocarbon moiety. -), And a compound having any one selected from the group consisting of carbonate bonds (-OCOO-)]
(D) an ether bond (—O—), a carbonyl bond (—CO—), an ester bond (—COO—) inserted between the chain hydrocarbon moiety and the CC single bond of the chain hydrocarbon moiety. ) And any one selected from the group consisting of carbonate bonds (—OCOO—) (hereinafter, may be referred to as “compound (D)”), (d ₁ ) aliphatic monovalent Examples include ethers of alcohols and aliphatic monohydric alcohols, (d ₂ ) dialkyl ketones, (d ₃ ) esters of fatty acids and aliphatic monohydric alcohols, and (d ₄ ) dialkyl carbonates.

[(D ₁ ) Ether of aliphatic monohydric alcohol and aliphatic monohydric alcohol]
Examples of the ether of the aliphatic monohydric alcohol and the aliphatic monohydric alcohol include the following formula (19):
R ¹⁹ OR ²⁰ (19)
(In the formula, R ¹⁹ and R ²⁰ are each a chain hydrocarbon)
The compound which has is mentioned.

As the aliphatic monohydric alcohol constituting the ether (corresponding to R ¹⁹ OH and R ²⁰ OH in the formula (19)), the ether satisfies the requirements for the IOB, melting point and water solubility. The aliphatic monohydric alcohol listed in the section of “Compound (B)” is not particularly limited.

In the ether of an aliphatic monohydric alcohol and an aliphatic monohydric alcohol, the total number of carbon atoms of the aliphatic monohydric alcohol constituting the ether, that is, the number of carbon atoms of R ¹⁹ and R ²⁰ in the above formula (19). Since the IOB is 0.50 when the sum of the two is 2, the IOB requirement is satisfied if the total number of carbon atoms is about 2 or more. However, when the total number of carbon atoms is about 6, the water solubility is as high as about 2 g, which is problematic from the viewpoint of vapor pressure. In order to satisfy the requirement of water solubility of about 0.00 to about 0.05 g, the total number of carbon atoms is preferably about 8 or more.

[(D ₂ ) dialkylketone]
As the dialkyl ketone, the following formula (20):
R ²¹ COR ²² (20)
(Wherein R ²¹ and R ²² are each an alkyl group)
The compound which has is mentioned.

In the dialkyl ketone, since the IOB is 0.54 when the total number of carbon atoms of R ²¹ and R ²² is 5, the IOB requirement is satisfied if the total number of carbon atoms is about 5 or more. However, when the total number of carbon atoms is about 5, the water solubility is as high as about 2 g. Therefore, in order to satisfy the requirement of water solubility of about 0.00 to about 0.05 g, the total number of carbon atoms is preferably about 8 or more. In consideration of the vapor pressure, the carbon number is preferably about 10 or more, and more preferably about 12 or more.
When the total number of carbon atoms is about 8, for example, 5-nonanone has a melting point of about −50 ° C. and a vapor pressure of about 230 Pa at 20 ° C.
In addition to being commercially available, the dialkyl ketone can be obtained by a known method, for example, by oxidizing a secondary alcohol with chromic acid or the like.

[(D ₃ ) ester of fatty acid and aliphatic monohydric alcohol]
Examples of the ester of the fatty acid and the aliphatic monohydric alcohol include the following formula (21):
R ²³ COOR ²⁴ (21)
(Wherein R ²³ and R ²⁴ are each a chain hydrocarbon)
The compound which has is mentioned.

Examples of the fatty acid constituting the ester (corresponding to R ²³ COOH in the formula (21)) are listed in “(a ₁ ) ester of chain hydrocarbon tetraol and at least one fatty acid”. Fatty acids, that is, saturated fatty acids or unsaturated fatty acids can be mentioned, and saturated fatty acids are preferable in consideration of the possibility of modification by oxidation or the like. Examples of the aliphatic monohydric alcohol constituting the ester (corresponding to R ²⁴ OH in formula (21)) include the aliphatic monohydric alcohols listed in the section “Compound (B)”.

In the ester of the fatty acid and the aliphatic monohydric alcohol, the total number of carbon atoms of the fatty acid and the aliphatic monohydric alcohol, that is, the total number of carbon atoms in the R ²³ C and R ²⁴ portions in the formula (21) is 5 In this case, since the IOB is 0.60, the above IOB requirement is satisfied when the total number of carbon atoms in the R ²³ C and R ²⁴ portions is about 5 or more. However, for example, butyl acetate having a total of 6 carbon atoms has a high vapor pressure of over 2,000 Pa. Therefore, considering the vapor pressure, the total number of carbon atoms is preferably about 12 or more. When the total number of carbon atoms is about 11 or more, the water solubility can satisfy the requirement of about 0.00 to about 0.05 g.

Examples of the ester of the fatty acid and the aliphatic monohydric alcohol include, for example, an ester of dodecanoic acid (C ₁₂ ) and dodecyl alcohol (C ₁₂ ), tetradecanoic acid (C ₁₄ ), and dodecyl alcohol (C ₁₂ ). Examples of commercially available esters of the above fatty acids and aliphatic monohydric alcohols include Electol WE20 and Electol WE40 (manufactured by NOF Corporation).

[(D ₄ ) dialkyl carbonate]
As the dialkyl carbonate, the following formula (22):
R ²⁵ OC (= O) OR ²⁶ (22)
(Wherein R ²⁵ and R ²⁶ are each an alkyl group)
The compound which has is mentioned.

In the dialkyl carbonate, since the IOB is 0.57 when the total number of carbon atoms of R ²⁵ and R ²⁶ is 6, if the total number of carbon atoms of R ²⁵ and R ²⁶ is about 6 or more, Satisfy requirements.
In consideration of water solubility, the total number of carbon atoms of R ²⁵ and R ²⁶ is preferably about 7 or more, and more preferably about 9 or more.
In addition to being commercially available, the dialkyl carbonate can be synthesized by a reaction between phosgene and an alcohol, a reaction between a chlorinated formate and an alcohol or an alcoholate, and a reaction between silver carbonate and an alkyl iodide.

[(E) polyoxy C ₃ -C ₆ alkylene glycol, or alkyl ester or alkyl ether thereof]
(E) Polyoxy C ₃ -C ₆ alkylene glycol, or alkyl ester or alkyl ether thereof (hereinafter sometimes referred to as compound (E)) includes (e ₁ ) polyoxy C ₃ -C ₆ alkylene glycol, (e ₂ ) Esters of polyoxy C ₃ -C ₆ alkylene glycol and at least one fatty acid; (e ₃ ) ethers of polyoxy C ₃ -C ₆ alkylene glycol and at least one aliphatic monohydric alcohol. This will be described below.

[(E ₁ ) polyoxy C ₃ -C ₆ alkylene glycol]
The polyoxy C ₃ -C ₆ alkylene glycol is any one selected from the group consisting of i) oxy C _3-6 alkylene units, that is, oxypropylene units, oxybutylene units, oxypentylene units, and oxyhexylene units. A homopolymer having one unit and having hydroxy groups at both ends, ii) a block copolymer having two or more units selected from the above group and having hydroxy groups at both ends, or iii) the above group It means a random copolymer having two or more units selected from and having hydroxy groups at both ends.

The polyoxy C ₃ -C ₆ alkylene glycol has the following formula (23):
_{HO- (C m H 2m O)} n -H (23)
(In the formula, m is an integer of 3 to 6)
Is represented by

  Polyethylene glycol (corresponding to a homopolymer of m = 2 in formula (23)) satisfies the IOB requirement of about 0.00 to about 0.60 when n ≧ 45, but n ≧ 45 In this case, the weight average molecular weight exceeds about 2,000.

Further, as a result of confirmation by the present inventor, about polypropylene glycol (corresponding to a homopolymer of m = 3 in the formula (23)), about 0.00 only when the weight average molecular weight is about 1,000 or more. It was found to meet an IOB of about 0.60, a melting point of about 45 ° C. or less, and a water solubility of about 0.00 to about 0.05 g for 100 g of water at 25 ° C. Accordingly, polypropylene glycol homopolymers are not included in the range of blood modifying agents.
Thus, propylene glycol should be included in (e ₁ ) polyoxy C ₃ -C ₆ alkylene glycol as a copolymer or random polymer with other glycols.

In the above formula (23), the value of n is such that the polyoxy C ₃ -C ₆ alkylene glycol has an IOB of about 0.00 to about 0.60, a melting point of about 45 ° C. or less, and 100 g of water at 25 ° C. A value having a water solubility of about 0.00 to about 0.05 g.

  For example, when Formula (23) is polybutylene glycol (m = 4 homopolymer), when n = 7, the IOB is 0.57. Accordingly, when Formula (23) is polybutylene glycol (m = 4 homopolymer), the above IOB requirement is satisfied when n ≧ about 7.

Examples of commercial products of polyoxy C ₃ -C ₆ alkylene glycol, e.g., UNIOL (TM) PB-500 and PB-700 (manufactured by NOF Corp.).

[(E ₂ ) ester of polyoxy C ₃ -C ₆ alkylene glycol and at least one fatty acid]
As an ester of the polyoxy C ₃ -C ₆ alkylene glycol and at least one fatty acid, the OH terminal of the polyoxy C ₃ -C ₆ alkylene glycol described in the section “(e ₁ ) polyoxy C ₃ -C ₆ alkylene glycol” In which one or both of them are esterified with a fatty acid, that is, monoesters and diesters.

Examples of the fatty acid to be esterified in the ester of polyoxy C ₃ -C ₆ alkylene glycol and at least one fatty acid are listed in “Ester of (a ₁ ) chain hydrocarbon tetraol and at least one fatty acid”. Fatty acid, that is, saturated fatty acid or unsaturated fatty acid, and saturated fatty acid is preferable in consideration of possibility of modification by oxidation or the like.

[(E ₃ ) ether of polyoxy C ₃ -C ₆ alkylene glycol and at least one aliphatic monohydric alcohol]
The ethers of polyoxy C ₃ -C ₆ alkylene glycol and at least one aliphatic monohydric alcohol, "(e ₁₎ polyoxy C ₃ -C ₆ alkylene glycol" polyoxy C ₃ -C ₆ alkylene which is described in the Mention may be made of those in which one or both of the OH ends of the glycol are etherified with an aliphatic monohydric alcohol, ie monoethers and diethers.
In the ether of polyoxy C ₃ -C ₆ alkylene glycol and at least one aliphatic monohydric alcohol, examples of the aliphatic monohydric alcohol to be etherified include, for example, the aliphatic compounds listed in the section of “Compound (B)”. A monohydric alcohol is mentioned.

[(F) chain hydrocarbon]
Since the chain hydrocarbon has an inorganic value of 0, the IOB is 0.00 and the water solubility is approximately 0 g. Therefore, if the melting point is about 45 ° C. or less, the blood It can be included in the modifier. Examples of the chain hydrocarbon include (f ₁ ) chain alkanes such as straight chain alkanes and branched chain alkanes. For example, in the case of straight chain alkanes, the melting point is about 45 ° C. or less. In general, those having 22 or less carbon atoms are included. Moreover, when the vapor pressure is taken into consideration, those having 13 or more carbon atoms are generally included. In the case of a branched chain alkane, the melting point may be lower at the same number of carbons than that of a straight chain alkane. Therefore, those having 22 or more carbon atoms may be included.
As a commercial item of the above-mentioned hydrocarbon, for example, Pearl Ream 6 (NOF Corporation) can be mentioned.

  The blood modifying agent will be discussed in detail in conjunction with the examples, but it has been found that it has at least an effect of lowering blood viscosity and surface tension. Compared with normal blood, menstrual blood to be absorbed by the absorbent article contains proteins such as the endometrial wall. Cheap. Therefore, menstrual blood to be absorbed by the absorbent article tends to have a high viscosity, and when the top sheet is a nonwoven fabric or a woven fabric, the menstrual blood is easily clogged between the fibers, and the wearer feels sticky. Easily, and menstrual blood diffuses on the surface of the topsheet, making it easier to leak.

In the absorbent article of the present disclosure, when the topsheet is a nonwoven fabric or a woven fabric because the topsheet includes a blood modifying agent that has been found to have at least an action of lowering the viscosity and surface tension of blood. Further, menstrual blood is not easily clogged between the fibers of the top sheet, and menstrual blood can be quickly transferred from the top sheet to the absorbent body.
In the absorbent article of the present disclosure, the blood modifying agent has a melting point of about 45 ° C. or lower, so that it is about 30 to about 30 ° C. regardless of whether it is liquid or solid at room temperature (25 ° C.). It is considered that when it comes into contact with a body fluid at 40 ° C., it liquefies (or is a liquid) and is easily dissolved in the body fluid.

Furthermore, a blood modifying agent having an IOB of about 0.00 to about 0.60 is highly organic and easily enters between blood cells, thus stabilizing the blood cells and making it difficult to form a monetary structure in the blood cells. It is considered possible.
It is considered that the blood modifying agent stabilizes blood cells and makes it difficult for a blood structure to form a monetary structure, so that the absorber can easily absorb menstrual blood. For example, in an absorbent article containing an acrylic superabsorbent polymer, so-called SAP, when menstrual blood is absorbed, it is known that the collected blood cells cover the SAP surface and the SAP does not easily exhibit the absorption performance. It is considered that SAP stabilizes blood cells and can easily exhibit absorption performance. In addition, it is considered that the blood modifying agent having a high affinity for red blood cells protects the red blood cell membrane, so that the red blood cells are hardly destroyed.

  As the liquid-permeable top sheet, those usually used in the art can be employed without particular limitation, for example, a sheet-like material having a structure that allows liquid to permeate, for example, an apertured film, Examples thereof include woven fabric and non-woven fabric. Examples of fibers constituting the woven fabric and nonwoven fabric include natural fibers and chemical fibers. Examples of natural fibers include cellulose such as pulverized pulp and cotton. Examples of chemical fibers include rayon and fibrillar rayon. And regenerated cellulose, semi-synthetic cellulose such as acetate and triacetate, thermoplastic hydrophobic chemical fibers, and thermoplastic hydrophobic chemical fibers subjected to hydrophilic treatment.

Examples of the thermoplastic hydrophobic chemical fiber include single fibers such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET), and fibers made of a graft polymer of PE and PP.
Examples of the nonwoven fabric include air-through nonwoven fabric, spunbond nonwoven fabric, point bond nonwoven fabric, spunlace nonwoven fabric, needle punch nonwoven fabric, melt blown nonwoven fabric, and combinations thereof (for example, SMS).

Examples of the liquid-impermeable back sheet include films containing PE, PP, etc., resin films having air permeability, those obtained by bonding a resin film having air permeability to a nonwoven fabric such as spunbond or spunlace, and composite materials such as SMS. A layer nonwoven fabric etc. are mentioned. Considering the flexibility of the absorbent article, for example, a low density polyethylene (LDPE) film having a basis weight of about 15 to about 30 g / m ² is preferable.
In one embodiment of the absorbent article of the present disclosure, a second sheet can be included between the liquid-permeable top sheet and the absorbent body. Examples of the second sheet include the same examples as the liquid-permeable top sheet.

As a 1st example of the said absorber, what has the absorption core covered with the core wrap is mentioned.
Constituent elements of the absorbent core include, for example, hydrophilic fibers such as cellulose such as pulverized pulp and cotton, regenerated cellulose such as rayon and fibril rayon, semi-synthetic cellulose such as acetate and triacetate, particulate polymer, and fibrous polymer. , Thermoplastic hydrophobic chemical fibers, hydrophobized thermoplastic hydrophobic chemical fibers, and combinations thereof. In addition, as a constituent element of the absorbent core, a superabsorbent polymer, for example, a granular material such as sodium acrylate copolymer may be mentioned.

  The core wrap is not particularly limited as long as it is liquid permeable and has a barrier property that does not allow the polymer absorber to permeate. Examples thereof include woven fabric and nonwoven fabric. Examples of the woven fabric and non-woven fabric include natural fibers, chemical fibers, and tissues.

As the second example of the absorbent body, one formed from an absorbent sheet or a polymer sheet can be cited, and the thickness is preferably about 0.3 to about 5.0 mm. The absorbent sheet and polymer sheet can be used without particular limitation as long as they are usually used in absorbent articles such as sanitary napkins.
In addition, the blood modifying agent can be present at any location, such as the entire surface of the top sheet or the central region near the vaginal opening, with respect to the planar direction of the top sheet.

Further, when the liquid-permeable top sheet is formed from a nonwoven fabric or a woven fabric, the blood modifying agent preferably does not block the gaps between the fibers of the nonwoven fabric or the woven fabric. Can adhere, for example, in the form of droplets or particles to the surface of the fibers of the nonwoven fabric or cover the surface of the fibers. On the other hand, when the liquid-permeable top sheet is formed of an apertured film, the blood modifier preferably does not block the aperture of the apertured film. It can adhere to the surface of the apertured film in the form of droplets or particles. This is because when the blood modifying agent closes the gap between the fibers of the nonwoven fabric or the woven fabric or the aperture of the apertured film, the absorbed liquid may be inhibited from transferring to the absorber.
In addition, the blood modifying agent preferably has a large surface area in order to quickly migrate to the absorbed liquid, and the blood modifying agent present in the form of droplets or particles preferably has a small particle size. .

Moreover, in embodiment with which an absorbent article has a 2nd sheet | seat, the said 2nd sheet | seat may contain the blood modifier. In one embodiment of the above absorbent article, the absorbent body may contain a blood modifying agent.
In the absorbent article, the topsheet preferably contains about 1 to about 30 g / m ² , more preferably about 2 to about 20 g / m ² , and even more preferably about 3 to about 10 g / m ^{2 of} the blood modifying agent. Inclusive of m ² basis weight range. When the basis weight of the blood modifying agent is less than about 1 g / m ² , the blood modifying effect tends to be insufficient, and when the basis weight of the blood modifying agent is increased, the sticky feeling during wearing increases. Tend.

  When the blood modifying agent is applied to the material, for example, when the top sheet is a non-woven fabric or an apertured film made of a synthetic resin, these are made hydrophilic by being coated with a hydrophilic agent or mixed. Preferably it has been treated. If the original material is hydrophilic, then it has an IOB of about 0.00 to about 0.60 and is coated with a highly organic and lipophilic modifier, so that the lipophilic region and hydrophilic The area will coexist sparsely. Thereby, it is considered that a certain absorption performance can be exhibited for menstrual blood composed of a hydrophilic component (plasma and the like) and a lipophilic component (blood cell and the like).

  The method for applying the blood modifying agent is not particularly limited, and is heated as necessary. For example, a non-contact type coater such as a spiral coater, a curtain coater, a spray coater, a dip coater, etc. It can be applied by a coater or the like. A non-contact type coater is preferable from the viewpoint that the droplet-like or particulate modifier is uniformly dispersed throughout and the point of not damaging the material. In addition, the blood modifying agent is applied from the control seam HMA gun as it is when it is liquid at room temperature, or heated to lower the viscosity, and heated so as to be liquefied when it is solid at room temperature. be able to. By increasing the air pressure of the control seam HMA gun, the particulate blood modifying agent can be applied.

  The blood modifying agent can be applied when a top sheet material, for example, a non-woven fabric is manufactured, or can be applied in a manufacturing line for manufacturing an absorbent article. From the viewpoint of suppressing capital investment, it is preferable to apply a blood modifying agent in the production line for absorbent articles, and in order to prevent the blood modifying agent from dropping and contaminating the line, the production line It is preferable to apply the blood modifying agent immediately before the downstream process, specifically, immediately before the product is enclosed in the individual package.

  The blood modifying agent can also act as a lubricant. When the top sheet is a nonwoven fabric, the friction between the fibers can be reduced, so that the flexibility of the entire nonwoven fabric is improved. Moreover, when a top sheet is a resin film, friction with a top sheet and skin can be reduced.

The absorbent article is suitable for absorbent articles intended to absorb blood, such as sanitary napkins and panty liners.
Note that the absorbent article of the present disclosure does not require components such as an emollient and a fixing agent, unlike an absorbent article including a conventionally known skin care composition, lotion composition, etc. It can be applied to the top sheet.

Hereinafter, although an example is given and this indication is explained, this indication is not limited to these examples.
[Example 1]
[Evaluation of rewetting rate and absorber transfer speed]
A commercially available sanitary napkin was prepared. The sanitary napkin includes a top sheet formed from an air-through nonwoven fabric (composite fiber made of polyester and polyethylene terephthalate, basis weight: 35 g / m ² ) treated with a hydrophilic agent, and an air-through nonwoven fabric (composite made of polyester and polyethylene terephthalate). Second sheet formed from fiber, basis weight: 30 g / m ² ), pulp (basis weight: 150 to 450 g / m ² , more in the center), acrylic superabsorbent polymer (basis weight: 15 g / m ² ) And an absorbent body containing a tissue as a core wrap, a side sheet treated with a water repellent, and a back sheet made of a polyethylene film.

The blood modifying agents used in the experiment are listed below.
[Ester of (a ₁ ) chain hydrocarbon tetraol and at least one fatty acid]
Unistar H-408BRS, manufactured by NOF Corporation Tetra-2-ethylhexanoate pentaerythritol, weight average molecular weight: about 640
Unistar H-2408BRS-22, manufactured by NOF Corporation Mixture of tetra-2-ethylhexanoic acid pentaerythritol and di-2-ethylhexanoic acid neopentyl glycol (58:42, mass ratio), weight average molecular weight: about 520

[Ester of (a ₂ ) chain hydrocarbon triol and at least one fatty acid]
· Cetiol SB45DEO, the Cognis Corp. fatty acids, oleic acid or stearic acid, triesters · SOY42 of glycerin and fatty acids, fatty acid manufactured by NOF Corporation C _14: fatty acid C _16: fatty acid C _18: Triester of glycerin and fatty acid, weight average molecular weight, containing C ₂₀ fatty acids (including both saturated and unsaturated fatty acids) in a mass ratio of approximately 0.2: 11: 88: 0.8 880

Tri-C2L oil fatty acid glyceride, manufactured by NOF Corporation C ₈ fatty acid: C ₁₀ fatty acid: C ₁₂ fatty acid is contained in a mass ratio of approximately 37: 7: 56, triester of glycerin and fatty acid, Weight average molecular weight: about 570
Tri-CL oil fatty acid glyceride, manufactured by NOF Corporation C ₈ fatty acid: C ₁₂ fatty acid is contained in a mass ratio of approximately 44:56, triester of glycerin and fatty acid, weight average molecular weight: about 570

· PANACET 810s, fatty acids manufactured by NOF Corporation C _8: fatty to C ₁₀ are contained in approximately 85:15 weight ratio of triesters of glycerol with fatty acids, the weight average molecular weight: about 480
・ Panasate 800, manufactured by NOF Corporation All fatty acids are octanoic acid (C ₈ ), triester of glycerin and fatty acid, weight average molecular weight: about 470
Panaceate 800B, manufactured by NOF Corporation All fatty acids are 2-ethylhexanoic acid (C ₈ ), triester of glycerin and fatty acid, weight average molecular weight: about 470

· NA36, manufactured by NOF Corporation C ₁₆ fatty acid: fatty acid C _18: (including both saturated and unsaturated fatty acids) C ₂₀ fatty acid approximately 5: contained at a weight ratio of 3: 92 Triester of glycerin and fatty acid, weight average molecular weight: about 880
· Tri-coconut oil fatty acid glyceride, NOF fatty Ltd. C _8: fatty C _10: fatty acid C _12: fatty acid C _14: (including both saturated fatty acids and unsaturated fatty acids) fatty acids C ₁₆ is approximately 4 : Triester of glycerin and fatty acid, contained in a mass ratio of 8: 60: 25: 3, weight average molecular weight: 670

-Caprylic acid diglyceride, manufactured by NOF Corporation Fatty acid is octanoic acid, diester of glycerin and fatty acid, weight average molecular weight: 340
[Ester of (a ₃ ) chain hydrocarbon diol and at least one fatty acid]
-Compol BL, manufactured by NOF Corporation Butylene glycol dodecanoic acid (C ₁₂ ) monoester, weight average molecular weight: about 270
Compole BS, manufactured by NOF Corporation Butylene glycol octadecanoic acid (C ₁₈ ) monoester, weight average molecular weight: about 350
Unistar H-208BRS, NOF Corporation di-2-ethylhexanoic acid neopentyl glycol, weight average molecular weight: about 360

[(C ₂ ) Ester of linear hydrocarbon tricarboxylic acid having 3 carboxyl groups, hydroxy acid, alkoxy acid or oxo acid and at least one aliphatic monohydric alcohol]
・ Tributyl O-acetylcitrate, manufactured by Tokyo Chemical Industry Co., Ltd. Weight average molecular weight: about 400
[(C ₃ ) ester of a chain hydrocarbon dicarboxylic acid having two carboxyl groups, a hydroxy acid, an alkoxy acid or an oxo acid and at least one aliphatic monohydric alcohol]
・ Dioctyl adipate, manufactured by Wako Pure Chemical Industries, Ltd. Weight average molecular weight: about 380

[(D ₃ ) ester of fatty acid and aliphatic monohydric alcohol]
Electol WE20, an ester of dodecanoic acid (C ₁₂ ) and dodecyl alcohol (C ₁₂ ) manufactured by NOF Corporation, weight average molecular weight: about 360
Electol WE40, an ester of tetradecanoic acid (C ₁₄ ) and dodecyl alcohol (C ₁₂ ) manufactured by NOF Corporation, weight average molecular weight: about 390

[(E ₁ ) polyoxy C ₃ -C ₆ alkylene glycol]
・ Uniol PB500, polybutylene glycol manufactured by NOF Corporation, weight average molecular weight: about 500
-Uniol PB700, manufactured by NOF Corporation polyoxybutylene polyoxypropylene glycol, weight average molecular weight: about 700

[(F ₁ ) chain alkane]
・ Pearl Ream 6, manufactured by NOF Corporation Branched hydrocarbons produced by copolymerizing liquid isoparaffin, isobutene and n-butene and then adding hydrogen, degree of polymerization: about 5 to about 10, weight average molecular weight : About 330

[Other materials]
-NA50, manufactured by NOF Corporation Hydrogen added to NA36 to reduce the ratio of double bonds derived from the unsaturated fatty acid as a raw material Triester of glycerin and fatty acid, weight average molecular weight: about 880
-(Caprylic acid / capric acid) monoglyceride, NOF Corporation octanoic acid (C ₈ ) and decanoic acid (C ₁₀ ) in a mass ratio of approximately 85:15, monoester of glycerin and fatty acid, Weight average molecular weight: about 220
-Monomuls 90-L2 lauric acid monoglyceride, manufactured by Cognis Japan

・ Isopropyl citrate, manufactured by Tokyo Chemical Industry Co., Ltd. Weight average molecular weight: about 230
・ Diisostearyl malate Weight average molecular weight: about 640
・ Uniol PB1000R, polybutylene glycol manufactured by NOF Corporation, weight average molecular weight: about 1,000
-Uniol D-400, manufactured by NOF Corporation, polypropylene glycol, weight average molecular weight: about 400

・ Uniol D-1000, manufactured by NOF Corporation, polypropylene glycol, weight average molecular weight: about 1,000
・ Uniol D-1200, manufactured by NOF Corporation, polypropylene glycol, weight average molecular weight: about 1,160
-Uniol D-3000, NOF Corporation polypropylene glycol, weight average molecular weight: about 3,000
・ Uniol D-4000, manufactured by NOF Corporation, polypropylene glycol, weight average molecular weight: about 4,000
PEG 1500, manufactured by NOF Corporation, polyethylene glycol, weight average molecular weight: about 1,500 to about 1,600

-Wilbright cp9, manufactured by NOF Co., Ltd. A compound in which the OH groups at both ends of polybutylene glycol are esterified with hexadecanoic acid (C ₁₆ ), weight average molecular weight: about 1,150
Unilube MS-70K, NOF Corporation Polypropylene glycol stearyl ether, about 15 repeating units, weight average molecular weight: about 1,140

Nonionic S-6, manufactured by NOF Corporation, polyoxyethylene monostearate, about 7 repeating units, weight average molecular weight: about 880
・ Unilube 5TP-300KB
Polyoxyethylene polyoxypropylene pentaerythritol ether produced by adding 5 mol of ethylene oxide and 65 mol of propylene oxide to 1 mol of pentaerythritol, weight average molecular weight: 4,130

-Wilbright s753, NOF Corporation polyoxyethylene polyoxypropylene polyoxybutylene glycerin, weight average molecular weight: about 960
・ Uniol TG-330, manufactured by NOF Corporation Polypropylene glycol glyceryl ether, about 6 repeating units, weight average molecular weight: about 330

-Uniol TG-1000, manufactured by NOF Corporation Polyglycol glycol glyceryl ether, about 16 repeating units, weight average molecular weight: about 1,000
-Uniol TG-3000, manufactured by NOF Corporation Polyglycol glycol glyceryl ether, about 16 repeating units, weight average molecular weight: about 3,000
-Uniol TG-4000, manufactured by NOF Corporation Polyglycol glycol glyceryl ether, about 16 repeating units, weight average molecular weight: about 4,000

Unilube DGP-700, manufactured by NOF Corporation Polyglycol glycol diglyceryl ether, about 9 repeating units, weight average molecular weight: about 700
・ Uniox HC60, polyoxyethylene hydrogenated castor oil manufactured by NOF Corporation, weight average molecular weight: about 3,570
・ Vaseline, manufactured by Cognis Japan Co., Ltd. Petroleum-derived hydrocarbon, semi-solid

Table 2 shows the IOB, melting point, water solubility, and weight average molecular weight of the sample.
The water solubility was measured according to the method described above, but 20.0 g was added to 100 g of demineralized water, and the sample dissolved after 24 hours was evaluated as “20 g <”. Samples that dissolved 0.05 g but did not dissolve 1.00 g were evaluated as 0.05 to 1.00 g.
Regarding the melting point, “<45” means that the melting point is less than 45 ° C.

The skin contact surface of the top sheet of the sanitary napkin was coated with the blood modifying agent described above. Each blood modifying agent is heated as it is if the blood modifying agent is liquid at room temperature, and if the blood modifying agent is solid at room temperature, it is heated to melting point + 20 ° C., and then control seam HMA gun Each blood modifying agent was atomized and applied to the skin contact surface of the top sheet so that the basis weight was approximately 5 g / m ² .

In Example 1, the range in which the top sheet contains a blood modifying agent is shown in FIG. As shown in FIG. 1, in Example 1, almost the entire surface of the top sheet 2 of the sanitary napkin 1 is a blood modifying agent-containing region 4 containing a blood modifying agent. In addition, in FIG. 1, the code | symbol 3 shows a pressing part.
FIG. 2 is an electron micrograph of the skin contact surface of the top sheet in a sanitary napkin (No. 5) in which the top sheet contains tri-C2L oil fatty acid glycerides. As is apparent from FIG. 2, the tri-C2L oil fatty acid glyceride is in the form of fine particles and is present on the surface of the fiber.

[Test method]
An acrylic plate with a hole (200 mm × 100 mm, 125 g, a hole of 40 mm × 10 mm is opened in the center) is placed on the top sheet containing each blood modifying agent, and 37 ± 1 ° C. from the hole. 3 g of equine EDTA blood (with equine blood added with ethylenediaminetetraacetic acid (hereinafter referred to as “EDTA”) to prevent coagulation) (1st time) using a pipette 3 g of equine EDTA blood at 37 ± 1 ° C. was dropped again with a pipette from the hole in the acrylic plate (second time).

Immediately after the second drop of blood, remove the acrylic plate immediately and place 10 pieces of filter paper (Qualitative Filter Paper No. 2, 50 mm x 35 mm) at the place where the blood was dropped. A weight was placed so as to be / cm ² . After 1 minute, the filter paper was taken out, and the “rewetting rate” was calculated according to the following formula.
Rewetting rate (%) = 100 × (filter paper mass after test−initial filter paper mass) / 6

In addition to the evaluation of the rewet rate, “absorber transfer rate”, which is the time for blood to transfer from the top sheet to the absorber, was measured after the second drop of blood. The above-mentioned absorption body transfer speed means the time from when blood is introduced into the top sheet until the redness of blood is not seen on the surface and inside of the top sheet.
The results of the rewet rate and the absorber transfer speed are shown in Table 2 below.

Moreover, the whiteness of the skin contact surface of the top sheet after the test of the absorber transition speed was visually evaluated according to the following criteria.
A: Almost no red blood remains, and it is not possible to distinguish between a place where blood is present and a place where blood does not exist. ○: Although a little red blood remains, It is difficult to distinguish the place where it does not exist. Δ: Some red blood remains, and the place where the blood existed. X: Red blood remains as it is. Shown in

  In the absence of a blood modifying agent, the rewetting rate was 22.7% and the absorber transfer rate was more than 60 seconds, but all triesters of glycerin and fatty acids had a rewetting rate. Since it is 7.0% or less and the absorber transfer speed is 8 seconds or less, it can be seen that the absorption performance is greatly improved. However, among the triesters of glycerin and fatty acid, NA50 having a melting point exceeding 45 ° C. did not significantly improve the absorption performance.

  Similarly, an IOB of about 0.00 to about 0.60, a melting point of about 45 ° C. or less, a water solubility of about 0.00 to about 0.05 g for 100 g of water at 25 ° C., and less than about 1,000 It has been found that the blood modifying agent having a weight average molecular weight of 5 greatly improves the absorption performance.

Next, no. No. 1 to 47 sanitary napkins were worn by a plurality of volunteer subjects. In the sanitary napkin containing 1 to 22 blood modifying agents, the top sheet was not sticky even after menstrual blood was absorbed, and the answer was that the top sheet was smooth. In particular, these are no. The answer that the difference with sanitary napkins, such as 23, 29, 34, 45, 47, was remarkable was obtained.
No. 1 to 22 sanitary napkins, and in particular, no. In the sanitary napkin containing the blood modifying agents 1 to 11, 15 to 19 and 22, the skin contact surface of the top sheet after absorbing menstrual blood is not stained red with blood, and there is little discomfort Got an answer.

[Example 2]
The above rewet rate was evaluated for various blood samples of animals. The blood used in the experiment is as follows.
[Animal species]
(1) Human (2) Horse (3) Sheep

[Blood species]
・ Defibrinated blood: After collecting blood, stirred for about 5 minutes in an Erlenmeyer flask with glass beads ・ EDTA blood: 65 mL of venous blood plus 0.5 mL of 12% EDTA / 2K physiological saline

[Fractionation]
Serum or plasma: supernatant after centrifuging defibrinated blood or EDTA blood, respectively, at room temperature at about 1900 G for 10 minutes. Blood cell: serum is removed from the blood, and the residue is phosphate buffered saline (PBS ) Washed twice and then added with phosphate buffered saline for the removed serum

Absorbent articles were produced in the same manner as in Example 1 except that the tri-C2L oil fatty acid glyceride was applied so that the basis weight was approximately 5 g / m ^2, and the above-described rewetting rates of various blood were evaluated. The measurement was performed 3 times for each blood, and the average value was adopted.
The results are shown in Table 3 below.

  Similar trends with equine EDTA blood obtained in Example 1 were also obtained with human and sheep blood. Similar trends were also observed in defibrinated blood and EDTA blood.

[Example 3]
[Evaluation of blood retention]
The blood retention in the top sheet containing the blood modifying agent and the top sheet not containing the blood modifying agent was evaluated.

[Test method]
(1) Tri C2L oil fatty acid glyceride is applied to the skin contact surface of the top sheet formed from an air-through nonwoven fabric (a composite fiber composed of polyester and polyethylene terephthalate, basis weight: 35 g / m ² ) using a control seam HMA gun. It is atomized and applied so that the basis weight is approximately 5 g / m ² . Moreover, the thing which has not apply | coated the tri C2L oil fatty-acid glyceride is also prepared for a comparison. Next, both the top sheet coated with tri C2L oil fatty acid glyceride and the uncoated top sheet are cut to a size of 0.2 g, and the mass (a) of the cell strainer + top sheet is accurately determined. taking measurement.

(2) About 2 mL of horse EDTA blood is added from the skin contact surface side and allowed to stand for 1 minute.
(3) Place cell strainer in centrifuge tube and spin down to remove excess horse EDTA blood.
(4) The mass (b) of the top sheet containing cell strainer + horse EDTA blood is measured.
(5) The initial absorption amount (g) per 1 g of the top sheet is calculated according to the following formula.
Initial absorption amount = [mass (b) −mass (a)] / 0.2
(6) The cell strainer is reset in the centrifuge tube and centrifuged at about 1200 G for 1 minute at room temperature.

(7) The mass (c) of the top sheet containing the cell strainer + horse EDTA blood is measured.
(8) The post-test absorption amount (g) per 1 g of the top sheet is calculated according to the following formula.
Absorption after test = [mass (c) −mass (a)] / 0.2
(9) Blood retention (%) was calculated according to the following formula.
Blood retention rate (%) = 100 × absorption after test / initial absorption The measurement was performed three times and the average value was adopted.
The results are shown in Table 4 below.

  It is suggested that the top sheet containing the blood modifying agent has low blood retention and can be rapidly transferred to the absorber after absorbing the blood.

[Example 4]
[Viscosity of blood containing blood modifying agents]
The viscosity of blood containing a blood modifying agent was measured using Rheometric Expansion System ARES (Rheometric Scientific, Inc). 2% by mass of panacet 810s was added to equine defibrinated blood, lightly stirred to form a sample, the sample was placed on a parallel plate with a diameter of 50 mm, the gap was 100 μm, and the viscosity was measured at 37 ± 0.5 ° C. . Because of the parallel plate, the sample did not have a uniform shear rate, but the average shear rate displayed on the instrument was 10 s ⁻¹ .

The viscosity of equine defibrinated blood containing 2% by mass of panacet 810s was 5.9 mPa · s, while the viscosity of equine defibrinated blood containing no blood modifying agent was 50.4 mPa · s. Therefore, it can be seen that equine defibrinated blood containing 2% by mass of panacet 810s decreases the viscosity by about 90% compared to the case where no blood modifying agent is contained.
Although blood is known to contain components such as blood cells and have thixotropic properties, the blood modifying agent of the present disclosure is considered to be able to lower the viscosity of blood in a low viscosity range. It is considered that the absorbed menstrual blood can be quickly transferred from the top sheet to the absorber by lowering the viscosity of the blood.

[Example 5]
[Micrograph of blood containing blood modifying agent]
A healthy volunteer's menstrual blood is collected on a wrap film for food protection, and a portion of the panacet 810s dispersed in 10 times the mass of phosphate buffered saline is used. It added so that it might become. Menstrual blood was appropriately applied to a slide glass, covered with a cover glass, and the state of red blood cells was observed with an optical microscope. A photomicrograph of menstrual blood containing no blood modifying agent is shown in FIG. 3 (a), and a photomicrograph of menstrual blood containing panacet 810s is shown in FIG. 3 (b).

  As shown in FIG. 3 (a), in menstrual blood that does not contain a blood modifying agent, red blood cells form a collective mass such as remuneration, but as shown in FIG. 3 (b), panacet 810s It can be seen that red blood cells are stably dispersed in menstrual blood containing. Therefore, it is suggested that the blood modifying agent functions to stabilize red blood cells in the blood.

[Example 6]
[Surface tension of blood containing blood modifying agents]
The surface tension of blood containing a blood modifying agent was measured by a pendant drop method using a contact angle meter Drop Master 500 manufactured by Kyowa Interface Science Co., Ltd. The surface tension was measured after adding a predetermined amount of blood modifying agent to sheep defibrinated blood and shaking sufficiently.
The measurement is automatically performed by the instrument, and the density γ is obtained by the following equation (see FIG. 4).

γ = g × ρ × (de) ² × 1 / H
g: Gravity constant 1 / H: Correction term obtained from ds / de ρ: Density de: Maximum diameter ds: Diameter at a position that is de higher than the dropping end

The density ρ is 5. in “Density Test Method and Density / Mass / Capacity Conversion Table” of JIS K 2249-1995. Based on the vibration density test method, the temperature was measured as shown in Table 5.
For the measurement, DA-505 of Kyoto Electronics Industry Co., Ltd. was used.
The results are shown in Table 5 below.

From Table 5, it is clear that the blood modifying agent has a water solubility of 0.00 to 0.05 g with respect to 100 g of water at 25 ° C., but the solubility in water is very low. It can be seen that the surface tension can be lowered.
By reducing the surface tension of the blood, it is considered that the absorbed blood can be quickly transferred to the absorbent body without being held between the fibers of the top sheet.

The present disclosure relates to the following J1 to J8.
[J1]
An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body between the liquid-permeable top sheet and the liquid-impermeable back sheet,
The liquid-permeable top sheet has an IOB of 0.00 to 0.60, a melting point of 45 ° C. or lower, a water solubility of 0.00 to 0.05 g with respect to 100 g of water at 25 ° C., and less than 1,000. A blood modifying agent having a weight average molecular weight of
The said absorbent article characterized by the above-mentioned.

[J2]
The blood modifying agent comprises the following (i) to (iii):
(I) hydrocarbons,
(Ii) from (ii-1) a hydrocarbon moiety and (ii-2) a carbonyl group (—CO—) and an oxy group (—O—) inserted between the C—C single bonds of the hydrocarbon moiety. A compound having one or a plurality of the same or different groups selected from the group consisting of: (iii) (iii-1) a hydrocarbon moiety, and (iii-2) a CC single bond of the hydrocarbon moiety One or a plurality of the same or different groups selected from the group consisting of a carbonyl group (—CO—) and an oxy group (—O—), and (iii-3) the hydrocarbon moiety A compound having one or a plurality of the same or different groups selected from the group consisting of a carboxyl group (—COOH) and a hydroxyl group (—OH), which replaces a hydrogen atom;
As well as selected from the group consisting of any combination thereof,
Here, in the compound of (ii) or (iii), when two or more oxy groups are inserted, each oxy group is not adjacent,
The absorbent article as described in J1.

[J3]
The blood modifying agent comprises the following (i ′) to (iii ′),
(I ′) hydrocarbon,
(Ii ′) (ii′-1) a hydrocarbon moiety and (ii′-2) a carbonyl bond (—CO—), an ester bond (—COO) inserted between the C—C single bonds of the hydrocarbon moiety. -), A carbonate bond (-OCOO-), and a compound selected from the group consisting of an ether bond (-O-) and having one or more same or different bonds, and (iii ') (iii'- 1) a hydrocarbon moiety and (iii′-2) a carbonyl bond (—CO—), an ester bond (—COO—), a carbonate bond (—OCOO) inserted between the C—C single bonds of the hydrocarbon moiety. -), And one or a plurality of the same or different bonds selected from the group consisting of an ether bond (-O-), and (iii'-3) a carboxyl group that replaces the hydrogen atom of the hydrocarbon moiety ( -COOH) and hydroxy A compound having one or a plurality of the same or different groups selected from the group consisting of a sil group (—OH);
As well as selected from the group consisting of any combination thereof,
Here, in the compound of (ii ′) or (iii ′), when two or more identical or different bonds are inserted, each bond is not adjacent,
The absorbent article as described in J1 or J2.

[J4]
The blood modifying agent comprises the following (A) to (F),
(A) (A1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (A2) a chain hydrocarbon moiety, and the chain An ester with a compound having one carboxyl group for substituting a hydrogen atom in the hydrocarbon moiety,
(B) (B1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (B2) a chain hydrocarbon moiety, and the chain An ether with a compound having one hydroxyl group replacing a hydrogen atom of the hydrocarbon moiety,
(C) (C1) a carboxylic acid, a hydroxy acid, an alkoxy acid or an oxo acid containing a chain hydrocarbon moiety and 2 to 4 carboxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety; C2) an ester of a compound having a chain hydrocarbon moiety and a hydroxyl group that replaces a hydrogen atom of the chain hydrocarbon moiety,
(D) an ether bond (—O—), a carbonyl bond (—CO—), an ester bond (—COO—) inserted between the chain hydrocarbon moiety and the CC single bond of the chain hydrocarbon moiety. ), And any one selected from the group consisting of carbonate bonds (—OCOO—),
(E) polyoxy C ₃ -C ₆ alkylene glycol or its alkyl ester or alkyl ether, and (F) a chain hydrocarbon,
The absorbent article according to any one of J1 to J3, which is selected from the group consisting of any combination thereof.

[J5]
The blood modifying agent comprises (a ₁ ) an ester of a chain hydrocarbon tetraol and at least one fatty acid, (a ₂ ) an ester of a chain hydrocarbon triol and at least one fatty acid, (a ₃ ) a chain An ester of a hydrocarbon diol and at least one fatty acid, (b ₁ ) an ether of a chain hydrocarbon tetraol and at least one aliphatic monohydric alcohol, (b ₂ ) a chain hydrocarbon triol and at least one aliphatic Ethers with monohydric alcohols, (b ₃ ) ethers of chain hydrocarbon diols with at least one aliphatic monohydric alcohol, (c ₁ ) chain hydrocarbon tetracarboxylic acids having 4 carboxyl groups, hydroxy acids , alkoxy acid or an oxo acid, at least one ester of an aliphatic monohydric alcohol, (c ₂₎ a chain hydrocarbon tricaprate with 3 carboxyl groups Bon acid, hydroxy acids, esters of alkoxy acids or oxoacids, and at least one aliphatic monohydric alcohol, (c ₃₎ a chain hydrocarbon dicarboxylic acids having two carboxyl groups, hydroxy acid, alkoxy acid or an oxo An ester of an acid and at least one aliphatic monohydric alcohol, (d ₁ ) an ether of an aliphatic monohydric alcohol and an aliphatic monohydric alcohol, (d ₂ ) a dialkyl ketone, (d ₃ ) a fatty acid and an aliphatic 1 Esters with dihydric alcohols, (d ₄ ) dialkyl carbonates, (e ₁ ) polyoxy C ₃ -C ₆ alkylene glycols, (e ₂ ) esters of polyoxy C ₃ -C ₆ alkylene glycols with at least one fatty acid, (e ₃ ) polyoxy C ₃ -C ₆ alkylene glycol and at least one aliphatic monohydric ethers of alcohols and, (f ₁₎ Jo alkane, and is selected from the group consisting of any combination thereof, the absorbent article according to any one of J1 through J4.

[J6]
The absorbent article according to any one of J1 to J5, wherein the blood modifying agent has a vapor pressure of 0.00 to 0.01 Pa at 1 atm and 40 ° C.
[J7]
The absorbent article according to any one of J1 to J6, wherein the blood modifying agent has a weight average molecular weight of 900 or less.

[J8]
The absorption according to any one of J1 to J7, wherein the liquid-permeable top sheet is a nonwoven fabric or a woven fabric, and the blood modifying agent is attached to a surface of a fiber of the nonwoven fabric or the woven fabric. Sex goods.
[J9]
The absorbent article according to any one of J1 to J8, which is a sanitary napkin or a panty liner.

DESCRIPTION OF SYMBOLS 1 Sanitary napkin 2 Top sheet 3 Squeeze part 4 Blood modifier containing area | region

Claims (9)

An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body between the liquid-permeable top sheet and the liquid-impermeable back sheet,
The liquid-permeable top sheet has an IOB of 0.00 to 0.60, a melting point of 45 ° C. or lower, a water solubility of 0.00 to 0.05 g with respect to 100 g of water at 25 ° C., and less than 1,000. A blood modifying agent having a weight average molecular weight of
The said absorbent article characterized by the above-mentioned. The blood modifying agent comprises the following (i) to (iii):
(I) hydrocarbons,
(Ii) from (ii-1) a hydrocarbon moiety and (ii-2) a carbonyl group (—CO—) and an oxy group (—O—) inserted between the C—C single bonds of the hydrocarbon moiety. A compound having one or more of the same or different groups selected from the group consisting of: (iii) (iii-1) a hydrocarbon moiety, and (iii-2) a CC single bond of said hydrocarbon moiety One or more of the same or different groups selected from the group consisting of a carbonyl group (—CO—) and an oxy group (—O—), inserted between them, and (iii-3) of the hydrocarbon moiety A compound having one or a plurality of the same or different groups selected from the group consisting of a carboxyl group (—COOH) and a hydroxyl group (—OH), which replaces a hydrogen atom;
As well as selected from the group consisting of any combination thereof,
Here, in the compound of (ii) or (iii), when two or more oxy groups are inserted, each oxy group is not adjacent,
The absorbent article according to claim 1. The blood modifying agent comprises the following (i ′) to (iii ′):
(I ′) hydrocarbon,
(Ii ′) (ii′-1) a hydrocarbon moiety and (ii′-2) a carbonyl bond (—CO—), an ester bond (—COO) inserted between the C—C single bonds of the hydrocarbon moiety. -), A carbonate bond (-OCOO-), and a compound selected from the group consisting of an ether bond (-O-) and having one or more same or different bonds, and (iii ') (iii'- 1) a hydrocarbon moiety and (iii′-2) a carbonyl bond (—CO—), an ester bond (—COO—), a carbonate bond (—OCOO) inserted between the C—C single bonds of the hydrocarbon moiety. -), And one or a plurality of the same or different bonds selected from the group consisting of an ether bond (-O-), and (iii'-3) a carboxyl group that replaces a hydrogen atom of the hydrocarbon moiety ( -COOH) and hydroxy A compound having one or a plurality of the same or different groups selected from the group consisting of a sil group (—OH);
As well as selected from the group consisting of any combination thereof,
Here, in the compound of (ii ′) or (iii ′), when two or more identical or different bonds are inserted, each bond is not adjacent,
The absorbent article according to claim 1 or 2. The blood modifying agent comprises the following (A) to (F),
(A) (A1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (A2) a chain hydrocarbon moiety, and the chain An ester with a compound having one carboxyl group for substituting a hydrogen atom in the hydrocarbon moiety,
(B) (B1) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing hydrogen atoms in the chain hydrocarbon moiety, (B2) a chain hydrocarbon moiety, and the chain An ether with a compound having one hydroxyl group replacing a hydrogen atom of the hydrocarbon moiety,
(C) (C1) a carboxylic acid, a hydroxy acid, an alkoxy acid or an oxo acid containing a chain hydrocarbon moiety and 2 to 4 carboxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety; C2) an ester of a chain hydrocarbon moiety and a compound having one hydroxyl group replacing a hydrogen atom of the chain hydrocarbon moiety,
(D) an ether bond (—O—), a carbonyl bond (—CO—), an ester bond (—COO—) inserted between the chain hydrocarbon moiety and the C—C single bond of the chain hydrocarbon moiety. And a compound having any one bond selected from the group consisting of a carbonate bond (—OCOO—),
(E) polyoxy C ₃ -C ₆ alkylene glycol or its alkyl ester or alkyl ether, and (F) a chain hydrocarbon,
Furthermore, the absorbent article as described in any one of Claims 1-3 selected from the group which consists of those arbitrary combinations. The blood modifying agent comprises (a ₁ ) an ester of a chain hydrocarbon tetraol and at least one fatty acid, (a ₂ ) an ester of a chain hydrocarbon triol and at least one fatty acid, (a ₃ ) a chain An ester of a hydrocarbon diol and at least one fatty acid, (b ₁ ) an ether of a chain hydrocarbon tetraol and at least one aliphatic monohydric alcohol, (b ₂ ) a chain hydrocarbon triol and at least one aliphatic Ethers with monohydric alcohols, (b ₃ ) ethers of chain hydrocarbon diols with at least one aliphatic monohydric alcohol, (c ₁ ) chain hydrocarbon tetracarboxylic acids having 4 carboxyl groups, hydroxy acids , alkoxy acid or an oxo acid, at least one ester of an aliphatic monohydric alcohol, (c ₂₎ a chain hydrocarbon tricaprate with 3 carboxyl groups Bon acid, hydroxy acids, esters of alkoxy acids or oxoacids, and at least one aliphatic monohydric alcohol, (c ₃₎ a chain hydrocarbon dicarboxylic acids having two carboxyl groups, hydroxy acid, alkoxy acid or an oxo An ester of an acid and at least one aliphatic monohydric alcohol, (d ₁ ) an ether of an aliphatic monohydric alcohol and an aliphatic monohydric alcohol, (d ₂ ) a dialkyl ketone, (d ₃ ) a fatty acid and an aliphatic 1 Esters with dihydric alcohols, (d ₄ ) dialkyl carbonates, (e ₁ ) polyoxy C ₃ -C ₆ alkylene glycols, (e ₂ ) esters of polyoxy C ₃ -C ₆ alkylene glycols with at least one fatty acid, (e ₃ ) polyoxy C ₃ -C ₆ alkylene glycol and at least one aliphatic monohydric ethers of alcohols and, (f ₁₎ Jo alkane, and is selected from the group consisting of any combination thereof, the absorbent article according to any one of claims 1-4.   The absorbent article according to any one of claims 1 to 5, wherein the blood modifying agent has a vapor pressure of 0.00 to 0.01 Pa at 1 atmosphere and 40 ° C.   The absorptive article according to any one of claims 1 to 6 in which said blood modifier has a weight average molecular weight of 900 or less.   The liquid-permeable top sheet is a nonwoven fabric or a woven fabric, and the blood modifying agent is attached to the surface of the fibers of the nonwoven fabric or the woven fabric. Absorbent articles.   The absorbent article as described in any one of Claims 1-8 which is a sanitary napkin or a panty liner.